On 12/8/25 02:48, Richard Henderson wrote:
On 8/12/25 03:06, Philippe Mathieu-Daudé wrote:
+++ b/target/arm/kvm.c
@@ -288,7 +288,7 @@ static bool
kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
1 << KVM_ARM_VCPU_PTRAUTH_GENERIC);
}
- if (kvm_arm_pmu_supported()) {
+ if (host_cpu_feature_supported(ARM_FEATURE_PMU, false)) {
Why is false correct here? Alternately, in the next patch, why is it
correct to pass true for the EL2 test?
I think I copied to KVM the HVF use, adapted on top of:
https://lore.kernel.org/qemu-devel/20250808070137.48716-12-mohamed@xxxxxxxxxxxxxxxx/
What is the purpose of the can_emulate parameter at all?
When using split-accel on pre-M3, we might emulate EL2:
| feat | can_emulate | retval
+ ---- + ----- + ----M1/M2 |
ARM_FEATURE_EL2 false false
M1/M2 | ARM_FEATURE_EL2 true true
M3/M4 | ARM_FEATURE_EL2 any true
